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M4 irons unlock a new level of straightness, distance, and forgiveness in a product designed to be the longest in our irons lineup.

INTRODUCING RIBCOR TECHNOLOGY

A breakthrough innovation in irons performance; RIBCOR is designed to help you hit it LONGER, HIGHER, and STRAIGHTER. RIBCOR localizes face flexibility, transferring more energy to the ball to increase ballspeed and promote straighter shots.

SPEED POCKET

Speed Pocket technology improves low-face flexibility to deliver more ballspeed in the key area where golfers commonly mis-hit.

FACE SLOTS

Face Slots enhance face flexibility in the heel and toe areas to preserve ballspeed on mis-hits for greater consistency.

LOW-CG DESIGN

The Fluted Hosel and 360° Undercut technologies produce discretionary weight that has been relocated low in the clubhead to improve launch, spin, and forgiveness.